For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343

Fax: 978-250-3373

Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

21

HMC988LP3E

v04.1014

PROGRAMMABLE CLOCK DIVIDER AND DELAY

DC - 4 GHz

Register Map

Table 8. Reg 00h - ID and Read Register

bit

name

Width

Default

Description

[3:0]

read Control

4

Enter register Address to be read From

[4]

soft reset

1

0

1: reset

[8:0]

Chip iD

9

register 00 Contains the Chip iD (406 decimal)

Table 9. Reg 01h - Enables

bit

name

Width

Default

Description

[0]

Master Chip Enable

1

1

1 Enables the Chip

[1]

rx buffer Enable

1

1

1 Enables the rx buffer

[2]

Divider Core Enable

1

1

1 Enables the Divider Core

[3]

output buffer enable

1

1

1 Enables the output buffer

[8:4]

reserved

5

0

Table 10. Reg 02h - Divide/Delay select

bit

name

Width

Default

Description

[2:0]

Divide ratio select

2

2

0: /1

1: /2

2: /4

3: /8

4: /16

5: /32

6: n/A

7: n/A

[8:3]

reserved

6

0

Table 11. Reg 03h - Bias

bit

name

Width

Default

Description

[1:0]

reserved

2

2

[3:2]

reserved

2

2

[5:4]

transmit buffer swing select

2

2

0: 600mVpp single Ended

1: 700mVpp single Ended

2: 800mVpp single Ended

3: 900mVpp single Ended

[8:6]

sYnC Delay Adjustment

3

3

Can be used to equalize sYnC delay between dividers. 1000+(0-7)*80 ps

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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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For price, delivery, and to place orders: Analog Devices, Inc.,

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D